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Indometacin

Indometacin Impurities & Reference Standards

Indometacin is a widely used active pharmaceutical ingredient (API) that plays a central role in modern drug formulation and manufacturing. Indometacin is registered under CAS Number 53-86-1. With molecular formula C19H16ClNO4 and molecular weight 357.8 g/mol, its physicochemical identity is well characterized. Related substances and impurities of Indometacin are routinely used as reference materials for stability-indicating method development, impurity profiling, and compliance with ICH, USP, BP, and EP monographs. Our Indometacin reference standards are provided with full documentation — Certificate of Analysis (CoA), HPLC chromatographic data, and spectral characterization — to support pharmaceutical R&D and GMP manufacturing.

Associated Impurities

Indometacin Impurity – A

  • CAS No: 74-11-3
  • Mol. F.: C7H5ClO2

Indometacin Impurity – B

  • CAS No: 2882-15-7
  • Mol. F.: C12H13NO3

Indometacin Impurity – C

  • CAS No: 4018-82-0
  • Mol. F.: C14H12ClNO2

Indometacin Impurity – D

  • CAS No:
  • Mol. F.: C19H16ClNO4

Indometacin Impurity – E

  • CAS No: 807614-94-4
  • Mol. F.: C19H16ClNO4

Indometacin Impurity – F

  • CAS No: 402849-27-8
  • Mol. F.: C21H16Cl2N2O3

Indometacin Impurity – G

  • CAS No: 402849-26-7
  • Mol. F.: C19H15Cl2NO4

Indometacin Impurity – H

  • CAS No: 1601-18-9
  • Mol. F.: C20H18ClNO4

Indometacin Impurity – I

  • CAS No: 16401-99-3
  • Mol. F.: C21H20ClNO4

Indometacin Impurity – J

  • CAS No: 402849-25-6
  • Mol. F.: C33H27Cl2N3O5
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